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Metadata: Expert consultation and Epidemiological study results for fish parasites Ceratothoa oestroides, Enteromixum leei and Sparicotyle chrysophrii
Abstract:
This dataset comprises the results of an expert consultation and epidemiological study conducted by Cefas and partners, as part of the Parafish Control project. The data were collected in order to produce a farm level modelling tool which fish farmers can use to assess the potential economic impact of parasites Ceratothoa oestroides, Enteromixum leei and Sparicotyle chrysophrii at the farm level. The relative risk posed to a potential or existing site based on characteristics such as the number of supplying hatcheries, and number of farms operating in the area. Site management practices such as frequency of mortality removal, use of fallowing, and frequency of net changes are also considered, and farmers are offered the chance to consider the cost associated with changing their practices to a lower risk option. The underlying data used in the model calculations are yet to be published (as of 12/11/2019). They are derived from two connected studies which are described briefly below. The first of these was an expert consultation. Various risk factors associated with the introduction and proliferation of these parasites at aquaculture sites were identified and an online questionnaire exploring their impacts in relation to these risk factors was completed independently by a group of experts (veterinarians, officials etc.). A Delphi style consultation meeting was then held, where the questionnaire results were presented by a moderator and discussed by the experts, and agreement reached on numerical values. The second study collected information from 39 mediterranean cage farms. The information collected covered the same range of risk factors as the previous study (farm location, size, environment, management and husbandry practices) together with information on their experience with the parasites (presence, associated mortalities and growth retardation, parasite monitoring and treatment). The .csv files contain a subset of all the data collected which are relevant to the economic model, the factors having been determined based on statistical significance and practical relevance. The full datasets from the two studies are not available at present. The data and associated reports are Confidential within the Parafish project but are being developed into peer-reviewed manuscripts. Links will be provided when these are published. The economic model can be found `here`_. .. _`here`: https://openscience.cefas.co.uk/parafish_economic/
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 9363 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | Expert consultation and Epidemiological study results for fish parasites Ceratothoa oestroides, Enteromixum leei and Sparicotyle chrysophrii |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | CEFAS2d3352dd-a679-48cb-82ba-50a38bf6740a |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS20141 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2015-03-31 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2020-03-30 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This dataset comprises the results of an expert consultation and epidemiological study conducted by Cefas and partners, as part of the Parafish Control project. The data were collected in order to produce a farm level modelling tool which fish farmers can use to assess the potential economic impact of parasites Ceratothoa oestroides, Enteromixum leei and Sparicotyle chrysophrii at the farm level. The relative risk posed to a potential or existing site based on characteristics such as the number of supplying hatcheries, and number of farms operating in the area. Site management practices such as frequency of mortality removal, use of fallowing, and frequency of net changes are also considered, and farmers are offered the chance to consider the cost associated with changing their practices to a lower risk option. The underlying data used in the model calculations are yet to be published (as of 12/11/2019). They are derived from two connected studies which are described briefly below. The first of these was an expert consultation. Various risk factors associated with the introduction and proliferation of these parasites at aquaculture sites were identified and an online questionnaire exploring their impacts in relation to these risk factors was completed independently by a group of experts (veterinarians, officials etc.). A Delphi style consultation meeting was then held, where the questionnaire results were presented by a moderator and discussed by the experts, and agreement reached on numerical values. The second study collected information from 39 mediterranean cage farms. The information collected covered the same range of risk factors as the previous study (farm location, size, environment, management and husbandry practices) together with information on their experience with the parasites (presence, associated mortalities and growth retardation, parasite monitoring and treatment). The .csv files contain a subset of all the data collected which are relevant to the economic model, the factors having been determined based on statistical significance and practical relevance. The full datasets from the two studies are not available at present. The data and associated reports are Confidential within the Parafish project but are being developed into peer-reviewed manuscripts. Links will be provided when these are published. The economic model can be found `here`_. .. _`here`: https://openscience.cefas.co.uk/parafish_economic/ |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Expert consultation There were two stages to the expert consultation. Firstly, selected experts were asked to independently complete an online questionnaire for each parasite they had significant experience with. The number of completed questionnaires for each parasite ranged from 10 to 18. The questionnaires asked for quantitative estimates for the relevance of risk routes of infection with the respective parasites, the relevance of management procedures for reducing or increasing mortality due to parasite infection, relevance of environmental factors, such as water exchange rate. They also asked for quantitative estimates of impacts of parasite infection on aquaculture production in terms of delay in reaching harvest size or cumulative mortality during certain phases of production. The second stage of the consultation was a face to face meeting for each parasite, which was attended by 10 to 17 experts (mainly the same ones who completed the questionnaires). Here the results of the online questionnaire were presented and discussed (median results and range) with the conversation managed by a facilitator. Some answers were revised as a result of clarifications by the facilitator and/or discussions amongst the experts. For most parameter estimates obtained there was good agreement on the median value by the experts, although in some cases the range was quite large. Regional differences in things such as temperature, sea conditions, culture methods and the availability of treatment were responsible for this in many cases, but in other cases large ranges simply reflected uncertainty. Whilst all of the experts were highly experienced with these parasites (some had worked in this field for over 20 years) it must be noted that the results are best estimates and may not be correct. Epidemiological study This study collected (in a questionnaire type format) detailed information on 39 cage farms. This included farm location, size, depth, sea conditions, proximity of other farms, fish supply, husbandry practices, hygiene and management practices, parasite monitoring and treatments used. It also captured information on the presence, severity of infection, and losses experienced through infection with these parasites. This allowed a statistical analysis to be carried out to identify the strength of associations between the various risk factors and the presence and severity of the parasitic infections. Some farms were unwilling or unable to answer some of the questions. The majority of risk factors did not have a statistically significant influence on the presence and severity of infection, but the general pattern of findings was similar to that of the expert consultation, and some strong effects were detected. A larger sample size would have improved the outcome. The Eastern Mediterranean was under-represented in the sample as a high number of farms from this region could not complete the study for various reasons. This meant that only 7 of the 39 sites had experience with Ceratothoa oestroides so few conclusions could be reached for this parasite. Significant contributions to these studies were made by Birgit Oidtmann (DEFRA, UK), Ariadna Sitjà-Bobadilla (CSIC, Spain), Alastair Cook (CEFAS, UK), Ivona Mladineo (IOR, Croatia), Paola Beraldo (University of Udine, Italy), Oswaldo Palenzuela (CSIC, Spain), Panos Christofilogiannis (AQUARK, Greece), Michela Massimo (University of Udine, Italy), Maria Letizia Fioravanti (University of Bologna, Italy), Carlos Zarza (Skretting, Spain), Ioannis Petropoulos (Andromeda, Greece). We would also like to thank the numerous other contributing experts and fish farmers. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish disease and parasites |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fisheries | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Economics | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Agricultural and aquaculture facilities | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Unknown | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | data.gov.uk | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 52.4595 |
| East | The eastern-most limit of the data resource in decimal degrees | 1.74086 |
| South | The southern-most limit of the data resource in decimal degrees | 52.4581 |
| West | The western-most limit of the data resource in decimal degrees | 1.73881 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | European Commission | |
| info@publications.europa.eu | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/20141 |
| Locator name | Name of the web resource | Cefas Data Portal |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | noLimitations | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode | |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2019-11-15 |
| Date of last revision | The most recent date that the resource was revised. | 2022-02-16 |
| Date of creation | The date that the resource was created. | 2019-11-08 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2022-02-16 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.1 |